Zodiacal Emission. III. Dust near the Asteroid Belt (original) (raw)
NASA/ADS
Abstract
Properties of the zodiacal dust bands are derived from fits to Infrared Astronomical Satellite profiles of the ecliptic. Three observations lead to the conclusion that the dust-band material is spread over a range of heliocentric distances between the asteroid belt and the sun: parallax, color temperature, and wavelength dependence of the band latitudes. The orientations of the midplanes of the bands are found to be typical of asteroids. A model of 'migrating bands', wherein dust is produced near the asteroid belt and spirals into the sun under the influence of Poynting-Robertson drag, is used to explain the range of heliocentric distances of dust-band material.
Publication:
The Astrophysical Journal
Pub Date:
June 1992
DOI:
Bibcode:
Keywords:
- Asteroid Belts;
- Cosmic Dust;
- Infrared Astronomy Satellite;
- Interplanetary Medium;
- Meteoritic Composition;
- Astronomical Spectroscopy;
- Emission Spectra;
- Infrared Astronomy;
- Astrophysics;
- ISM: DUST;
- EXTINCTION;
- INTERPLANETARY MEDIUM;
- METEOROIDS;
- MINOR PLANETS